Copying and pasting into terminal while typing

Here's a new problem I'm certain I didn't have yesterday, and I don't know what I did...

Every time I hit the 'o' key in terminal it pastes the contents of the clipboard. It doesn't happen in any other applications - I can type in gedit and firefox with no problem. It's quite troublesome... I put 'o' on the clipboard as a temporary fix - but does anyone know what's happening here?

That's so crazy! I run Terminal and Eterm, that is xfce's Terminal even tho I don't use xfce, because Terminal is definitely the best terminal around (and I believe you can set the keycodes if you have a weird keyboard, which might be some kind of fix altho hopefully you wouldn't suffer the problem) and Eterm because you can only have one configuration set up at a time with Terminal.

But that's definitely the terminal, I would say, or it's relationship to your window manager.

So it turns out that there's an option to edit keyboard shortcuts from the drop-down menu.... Yeah....

I love it when you've accidentally moved the mouse over another window, then start typing a bunch of stuff into the wrong window, which then interprets the keystrokes as weird commands, and you put your application into some bozo mode and can't figure out how to get out of it.